package com.jingxuan.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.databind.jsontype.impl.LaissezFaireSubTypeValidator;
import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import org.springframework.data.redis.serializer.StringRedisSerializer;

import java.time.ZoneId;
import java.util.TimeZone;

/**
 * Redis配置类
 */
@Configuration
public class RedisConfig {
    
    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory connectionFactory) {
        RedisTemplate<String, Object> template = new RedisTemplate<>();
        template.setConnectionFactory(connectionFactory);
        
        // 使用Jackson2JsonRedisSerializer来序列化和反序列化redis的value值
        Jackson2JsonRedisSerializer<Object> serializer = new Jackson2JsonRedisSerializer<>(Object.class);
        
        ObjectMapper mapper = new ObjectMapper();
        mapper.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        
        // 配置时区为 Asia/Shanghai (UTC+8)
        mapper.setTimeZone(TimeZone.getTimeZone(ZoneId.of("Asia/Shanghai")));
        
        // 注册 JavaTimeModule 处理 LocalDateTime 等时间类型
        JavaTimeModule javaTimeModule = new JavaTimeModule();
        mapper.registerModule(javaTimeModule);
        
        // 禁用时间戳格式，使用 ISO-8601 字符串格式
        mapper.disable(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS);
        
        // 激活默认类型信息
        mapper.activateDefaultTyping(LaissezFaireSubTypeValidator.instance, ObjectMapper.DefaultTyping.NON_FINAL);
        
        // 设置 ObjectMapper（虽然该方法已废弃，但在当前版本仍可使用）
        serializer.setObjectMapper(mapper);
        
        // 使用StringRedisSerializer来序列化和反序列化redis的key值
        StringRedisSerializer stringRedisSerializer = new StringRedisSerializer();
        
        // key采用String的序列化方式
        template.setKeySerializer(stringRedisSerializer);
        // hash的key也采用String的序列化方式
        template.setHashKeySerializer(stringRedisSerializer);
        // value序列化方式采用jackson
        template.setValueSerializer(serializer);
        // hash的value序列化方式采用jackson
        template.setHashValueSerializer(serializer);
        
        template.afterPropertiesSet();
        return template;
    }
}

